Multiple-tool drill



Sept. 11, 1928.

G. E. HALLENBECK MULTIPLE TOOL DRILL Filed June 9. 1921 3 Sheets-Sheet :Jn-vento@ G1101 ne sept. u, 192s.

G. E. HALLENBECK MULTIPLE TooL DRILL Filed June 9. 1921 3 Sheets-Sheet 2 Il*l 7 3 6 6 t m, m D 6, Q a m w l ll a .m a w 3 n [im wH I KL mum u ,El Eme. 2 www Il m M B AEu a, ,I HLJ I .Hd Il. Emu I .um u! GM .l 5 7 a v 1| .p oo 4 @n 5 l 4 se -l 3 l.. l I l www J .W t vvxill|` s TE D E a 2 B ,5 :H 3

(kunnen y tiple tool drill presses.'

Patented Sept. 11.11928.

PATENT OF Fiel-3.V

enonen anamnmanox, or romano, omo, nssrenoany MnsNn Assrsnnnnrs, r'ro BROTHERS, I NO., OF vrrOLEDO, OHIO,

A CORPORATION OF OHIO` lnUL'rIPLE-'Toon DRILL.

Application led June 9,

This invention relates to features of mul- This invention has utility in the mounting, drivingand adjustment of tools to Work. `Referring to the drawings Fig.v `1 is a side elevation ofan embodiment o the invention in afdrill press; j 1

F'g. 2 `is a plan viewof the table fixture ofthe drill press. of Fig. 1; i

F ig. 3 is a view looking up from thetable fixture toward the tool carrying heads, parts being broken awaygf and Fig. 4 isa side elevation with parts broken away of one of the multiple tool. carrying heads.'

Machine tool main frame 1 is shown provided With vbase 2. Upstanding from .this basei2 is threaded stem 3 extending Athrough knee 4 adjustable on guides 5 on the main frame 1.'- This kneetcarries angularly shiftable. table 6` concentric with the stem 3. Mounted on this table 6 is fixture 7 for an-4 choring workin various symmetrical radial positions to bring into proper stationsunder various tools, thisffixtu're -being arwork holder. The stemffis held at its upper portion' by guides 8 from' 'the main frame 1,1 to

thus be eective formakilng more rigid or.

stable the assembly@ relation between theoverhang and base to'minimizedany vibration which; might be ltransmittedto the spindles.

; Driving pulley 9,1 `through gearing 10, 1:1, serves to mtate a pair of vertical main drill spindles12. Driven from the, gearing lOis.

`gear train V13V for rotating shaft 14 connected j j A 25 and 24;l The end to be served by such.

to drive `feedracks 15 on sleeves 16.` s I Each slee-ve 16 atits lower .portionfterf minates. in `anannular .flange 1,7 having recesses 18 parallel yto the spindle 12 for bolts 19,.v Bolts ,'19, throughthese `recesses 18 serve to mountthe main ihousing member 20 in position tothe Vflange 17. A supplementary housingVV member 21 is anchored to this housing member 20 by means of bolts 22. The main housing member 20 has centrally an anti-friction bearing 23 mounting ypinion 24 driven from and coaxial with its main spindle 12. This pinion 24 is in mesh with intermediate pinion 25 looselymounted on stem 26 carried by the housing-member 21 in Va vertical position parallel to the spindle 12. This housing member 21 also carries upstanding sleeve 27 for roller bearings's28, 29. These bearings 28, 29, provide an anti-friction mounting for dles 12 1921; 'serial No.747e,142.

sleeveextensions of pinion 430.` The' pinion is in mesh with the intermediate pinion 25a- Tnis sleeve of `the pinion 30 issmooth onv its inner portiony except to provide a way for key 31. This key 31 effects anchoring ofthis pinion 30 for rotation with tool Vcarrying spin-fV dle 32. yThis spindle32 isexternally thread.- ed. The lower portion of this spi-ndlev 32 isy engaged by anut 233.k `The adjustment of the nut 33 to `thefhousingl'21 may be locked by set screw 84. In this grouping of theheadythe number of the pinions 25 in mesh with Athey pinion 24 is shown as two, and thenumber of pinions in mesh with,l each pinion 25 is shown as two, thereby providing four tool carrying spindles 32 to `be driven from this single main drill spindle 12. v s However, in this machine Vas herein dis closed, there are two` parallel main drill spinf v driven from theV gearing `11 and the installation as herein disclosed may care for eight tools, althou closed is susceptible of variation as `may be; found desirable for handling theparticular work. The anchoringby the bolts 19 precludes any shifting oit Vthe mainhousing 20 tothe head carrying flange 17. Fine adjustments between the gears are very accurately taken up by Vshifting the housing member21as to the housing members 17 207 on account of the play or looseness of openings 36 `for bolts 22,V This shifting of the housingmember 21 -to gh the Vprincipleherein disshifting may be the bringing into the desired, i

radialrelation the tools 35, so that they may` have registryin proper posit-ion -for thev Work f s at succeeding stations.` This lateral adjust- 0h ment to align the tool is simple for light duty y in practice.V

Supplementary stems 37 are carried bythe housing-member20. About these stems 37 may be disposed helical springs 38 normally thrusting downward a guide bushingv) for` the tools S5 thereby serving'as a guide for the tools as Well as a supplementary means for holding the Work'and freeing the tools from v the Work -as `Vthe spindles l2 are operated,

upvardinlftinglthe heads 17, 20, 21.

j As an instance of operation hereunder,

reference may be had to F ig. 2 uponwhich a.

blank piece of work 40 is placed, say at the loading station and this Vfixture 7 shifted 60- for a first drilling operation at station 41. The table may then-be shifted a second o to station 42 Where a second drilling operation may occur, While-the first drilling` operation is occurring on va second piece of Work at station 41.? In this way the tools may be kept Working right through and tor the shift-v rby Letters Patent is:

1. A multiple tool' head comprising a driving'spindle, gearinr actuable from the. spindle, a ypair'oi with said gearing, mounting means for tool carrying gearing, said means assembling said pair of holders as a unit for-maintaining atk all times the constant spacing therebetween,

and a support for said mounting means -on which themounting means is shiftable for adjusting the pair of holders kas a unit laterally of and 'relatively tothe spindle While maintaining transmission connectionVA from the spindle through 'the gearing to saidl '2. yAmultiple-tool head comprising a driving spindle, a gear onthe spindle, driven spindles, transmission vgearinr between said driving spindle gear and said driven spindles, and means mountingthe transmissiongearv ingftherefrom in saidhead to a plurality'of said vdriven spindles vas a` unit independently of saidfdrivingspindle gear, and a support for said mounting means to which the mountjl ing'means is shiftable for radially adjusting vtoo holders axially alignedy said mountingvrelatively to said gear Dn the spindlefor thereby varying tlieumesh extent of the transmission gearing with said driving gear. j A

A multiple head, a main"driving"spin dle, tool carrying rotary holders in said head, holder mounting means embodying a supporting member, and a supported mem er relatively shiftable for axially adjusting the holders as yto the head, and driving connections' from thespindle for the holders axially coincident in part mounted by thespindlc and the'balance axially parallel .with the holders andV saidspindle carried by the supported member, whereby adjustment of the supported member to the supporting member is eiiective `for simultaneously justing the latter holders relatively to the spindle While maintaining said latter holders in fixed spaced relation/With; each other.

4. A rotary main spindle, feeding means therefor, driving means'for rotating the main spindle, a heady to be fed with the spindle, a pair of tool carrying rotary holders in said head driven from the main spindle, means' relatively shittable in Vsaid head for adjust ing the spacing parallel to the spindle axis of the tool carrying holders as a unit to the head for thereby maintaining spaced relation between said holders, and driving transmission connections in said head from' the spindle to4 said holders maintained axially parallel to said holders during their adjustment with said holders. Y 5. A machine tool embodying a base. a frame rising from the baseand provided with an overhang,L a pair of spindles depending from the overhang, a gear on each-otsaidI spindles,` a non-rotary head carriedby each spindle and" providing a skirt, a plurality of gearsyin each 'of said heads, andjmeans mounting saidA head carried gears iny said skirt as a unit to be driven from the spindle gears, said mounting means being adjustable in said skirt radially of .said yspindle to vary the mesh relation of the pairof head carried gears with the spindle gears;`

In witness whereof I'ailix my signature radially ad i Giro. n. HALLENBEGK. y A 

